.<template>
    <div class="app-container">
      <h2 style="text-align: center">发布新课程</h2>
      <el-steps
        :active="2"
        process-status="wait"
        align-center
        style="margin-
  bottom: 40px;"
      >
        <el-step title="填写课程基本信息" />
        <el-step title="创建课程大纲" />
      </el-steps>
  
      <el-button type="text" @click="openChapterDialog()">添加章节</el-button>
  
      <ul>
        <li v-for="chapter in chapterVideoList" :key="chapter.id">
          <p>
            {{ chapter.title }}
            <span>
              <el-button type="text" @click="openEditVideo(chapter.id)"
                >添加小节</el-button
              >
              <el-button style="" type="text" @click="openEditChapter(chapter.id)"
                >编辑</el-button
              >
              <el-button type="text" @click="removeById(chapter.id)"
                >删除</el-button
              >
            </span>
          </p>
  
          <ul>
            <li v-for="video in chapter.children" :key="video.id">
              <p>
                {{ video.title }}
  
                <el-button type="text" @click="getVideoById(video.id)"
                  >编辑</el-button
                >
                <el-button type="text" @click="removeVideo(video.id)"
                  >删除</el-button
                >
              </p>
            </li>
          </ul>
        </li>
      </ul>
  
      <el-form label-width="120px">
        <el-form-item>
          <el-button @click="previous">上一步</el-button>
          <el-button :disabled="saveBtnDisabled" type="primary" @click="next"
            >下 一步</el-button
          >
        </el-form-item>
      </el-form>
  
      <!-- 添加和修改章节表单 -->
      <el-dialog :visible.sync="dialogChapterFormVisible" title="添加章节">
        <el-form :model="chapter" label-width="120px">
          <el-form-item label="章节标题">
            <el-input v-model="chapter.title" />
          </el-form-item>
          <el-form-item label="章节排序">
            <el-input-number
              v-model="chapter.sort"
              :min="0"
              controls-
              position="right"
            />
          </el-form-item>
        </el-form>
        <div slot="footer" class="dialog-footer">
          <el-button @click="dialogChapterFormVisible = false">取 消</el-button>
          <el-button type="primary" @click="saveOrUpdate">确 定</el-button>
        </div>
      </el-dialog>
  
      <!--添加小节表单-->
      <!-- 添加和修改课时表单 -->
      <el-dialog :visible.sync="dialogVideoFormVisible" title="添加课时">
        <el-form :model="video" label-width="120px">
          <el-form-item label="课时标题">
            <el-input v-model="video.title" />
          </el-form-item>
          <el-form-item label="课时排序">
            <el-input-number
              v-model="video.sort"
              :min="0"
              controls-
              position="right"
            />
          </el-form-item>
          <el-form-item label="是否免费">
            <el-radio-group v-model="video.free">
              <el-radio :label="true">免费</el-radio>
              <el-radio :label="false">默认</el-radio>
            </el-radio-group>
          </el-form-item>
          <el-form-item label="上传视频">
            <el-upload
              :on-success="handleVodUploadSuccess"
              :on-remove="handleVodRemove"
              :before-remove="beforeVodRemove"
              :on-exceed="handleUploadExceed"
              :file-list="fileList"
              :action="BASE_API + '/eduvod/video/uploadAlyVideo'"
              :limit="1"
              class="upload-demo"
            >
              <el-button size="small" type="primary">上传视频</el-button>
              <el-tooltip placement="right-end">
                <div slot="content">
                  最大支持1G，<br />
                  支持3GP、ASF、AVI、DAT、DV、FLV、F4V、<br />
                  GIF、M2T、M4V、MJ2、MJPEG、MKV、MOV、MP4、<br />
                  MPE、MPG、MPEG、MTS、OGG、QT、RM、RMVB、<br />
                  SWF、TS、VOB、WMV、WEBM 等视频格式上传
                </div>
                <i class="el-icon-question" />
              </el-tooltip>
            </el-upload>
          </el-form-item>
        </el-form>
        <div slot="footer" class="dialog-footer">
          <el-button @click="dialogVideoFormVisible = false">取 消</el-button>
          <el-button
            :disabled="saveVideoBtnDisabled"
            type="primary"
            @click="saveOrUpdateVideo(video.id)"
            >确 定</el-button
          >
        </div>
      </el-dialog>
    </div>
  </template>
  
  <script>
  import chapter from "@/api/chapter.js";
  import video from "@/api/video.js";
  
  export default {
    data() {
      return {
        dialogChapterFormVisible: false, //章节弹框是否显示
        dialogVideoFormVisible: false, //小节弹框是否显示
        fileList: [], //上传文件列表
        BASE_API: process.env.BASE_API, // 接口API地址
        video: {
          id: "",
          free: "",
          sort: "",
          title: "",
          videoSourceId: "",
          videoOriginalName: "",
        },
        chapter: {
          title: "",
          sort: "",
        }, //封装章节数据
        courseId: "",
        saveBtnDisabled: false,
        chapterVideoList: [],
      };
    },
    methods: {
      //上传成功执行方法
      handleVodUploadSuccess(response, file, fileList) {
        this.video.videoSourceId = response.data.videoId;
        this.video.videoOriginalName = response.data.videoOriginalName;
      },
      //点击XX 会调用的方法
      beforeVodRemove(file, fileList) {
        return this.$confirm(`确定移除 ${file.name}？`);
      },
      //点击确认，删除会调用的方法
      handleVodRemove() {
        //调用接口里面的删除视频方法
        video.deleteAliyunVideoById(this.video.videoSourceId).then((resp) => {
          this.$message({
            type: "success",
            message: "删除成功!",
          });
          //把文件列表清空
          this.fileList = [];
          //清空视频id和视频名称
          this.video.videoSourceId = "";
          this.video.video_original_name = "";
        });
      },
      //==================================小节操作===================================================
      //修改小节表单回显
      getVideoById(videoId) {
        //弹出小节弹窗
        this.dialogVideoFormVisible = true;
        video.getVideoById(videoId).then((resp) => {
          this.video = resp.data.item;
        });
      },
      //删除小节
      removeVideo(videoId) {
        this.$confirm("此操作将永久删除小节信息, 是否继续?", "提示", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }).then(() => {
          //点击确定，执行then方法
          video.deleteByVideoIdAndAliyun(videoId).then((resp) => {
            //删除成功
            //提示信息
            this.$message({
              type: "success",
              message: "删除成功!",
            });
            //刷新页面
            this.getChapterVideoByCourseId();
          });
        });
      },
      //添加小节弹框的方法
      openEditVideo(chapterId) {
        //把文件列表清空
        this.fileList = [];
        //清空之前的数据
        this.video = {};
        //显示弹框
        this.dialogVideoFormVisible = true;
        //设置章节id
        this.video.chapterId = chapterId;
      },
      //添加小节
      addVideo() {
        //设置课程id
        this.video.courseId = this.courseId;
        video.addVideo(this.video).then((resp) => {
          //关闭弹框
          this.dialogVideoFormVisible = false;
          //提示信息
          this.$message = resp.message;
          //刷新页面
          this.getChapterVideoByCourseId();
        });
      },
      //小节修改
      updateVideorById(videoId) {
        //设置小节id到video对象中
        this.video.id = videoId;
        console.log("视频对象:"+this.video.videoSourceId)
        video.updateVideo(this.video).then((resp) => {
          //关闭弹框
          this.dialogVideoFormVisible = false;
          //提示信息
          this.$message({
            message: "修改小节成功",
            type: "success",
          });
          //刷新页面
          this.getChapterVideoByCourseId();
        });
      },
      //提交小节表单信息
      saveOrUpdateVideo(videoId) {
        if (this.video.id) {
          this.updateVideorById(videoId);
        } else {
          this.addVideo();
        }
      },
  
      //==================================章节操作================================
      //删除章节
      removeById(chapterId) {
        this.$confirm("此操作将永久删除章节信息, 是否继续?", "提示", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }).then(() => {
          //点击确定，执行then方法
          chapter.deleteById(chapterId).then((resp) => {
            //删除成功
            //提示信息
            this.$message({
              type: "success",
              message: "删除成功!",
            });
            //刷新页面
            this.getChapterVideoByCourseId();
          });
        });
      },
      //修改章节数据回显
      openEditChapter(chapterId) {
        //打开弹框
        this.dialogChapterFormVisible = true;
        chapter.updateChapterById(chapterId).then((resp) => {
          //数据回显
          this.chapter = resp.data.item;
        });
      },
      //弹出添加章节表单
      openChapterDialog() {
        //清空之前的数据
        this.chapter = {};
        //显示弹框
        this.dialogChapterFormVisible = true;
      },
      //修改章节
      updateChapter() {
        //设置课程id到chapter对象中
        this.chapter.courseId = this.courseId;
        chapter.updateChapter(this.chapter).then((resp) => {
          //关闭弹框
          this.dialogChapterFormVisible = false;
          //提示信息
          this.$message({
            message: "修改章节成功",
            type: "success",
          });
          //刷新页面
          this.getChapterVideoByCourseId();
        });
      },
      //添加章节
      saveChapter() {
        //设置课程id到chapter对象中
        this.chapter.courseId = this.courseId;
        chapter.addChapter(this.chapter).then((resp) => {
          //关闭弹框
          this.dialogChapterFormVisible = false;
          //提示信息
          this.$message({
            message: "添加章节成功",
            type: "success",
          });
          //刷新页面
          this.getChapterVideoByCourseId();
        });
      },
  
      saveOrUpdate() {
        if (this.chapter.id) {
          //修改章节
          this.updateChapter();
        } else {
          //新增章节
          this.saveChapter();
        }
      },
      //根据课程id查询对应的课程章节和小结
      getChapterVideoByCourseId() {
        chapter.getChapterVideoByCourseId(this.courseId).then((resp) => {
          this.chapterVideoList = resp.data.items;
        });
      },
      //跳转到上一步
      previous() {
        this.$router.push({ path: "/ucenter/publicCourse" , query:{courseId:this.courseId }});
      },
      
    },
    created() {
      //获取路由里的id值
      
        this.courseId = this.$route.query.courseId;
      
      //根据课程id查询对应的课程章节和小结
      this.getChapterVideoByCourseId();
    },
  };
  </script>
  
  <style scoped>
  </style>